From Wiktionary, the free dictionary
præfixt (not comparable)
- Obsolete form of prefixed.
1753, Sylvanus Urban, editor, The Gentleman’s Magazine, and Hiſtorical Chronicle, volume 23, page 276:Whether or not is the abcedarium præfixt to the church’s catechiſm more eligible than that inſerted in Mr Dyche’s ſyllabicating code?